Cylindrical hairbrush construction



Aug. 11, 1953 R. T. TEETSEL CYLINDRICAL HAIRBRUSH CONSTRUCTION FiledJuly 13, 1951 INVENTOR 1PM PA/Z'Ta'n'n BY (W diul ATTORNEYS PatentedAug. 11, 1953 .CYLINDRICAL HAIRBRUSH CONSTRUCTION RalphlT. Tectsel,Springfield, Pa., assignor to I Better Brushes, Incorporated, Palmer,Mass., a corporation of Massachusetts Application July 13, 1951, SerialN 0. 236,605

3 Claims.

This invention relates to hairbrushes and particularly to that type ofbrush having a generally cylindrical brushing surface.

An'object of the invention isto provide a novel construction for acylindricalhairbrush comprising two separable units each in and ofitself consisting of a complete hairbrush and adapted and suited for useas such.

Another object is to provide a novel brush having twin units easilyassembled and disassembled and which will combine the advantages of eachtype of brush in one unitary article.

These and other specific advantages will be apparent from the followingdescription of an embodiment of the invention as illustrated by theaccompanying drawings in which,

Fig. 1 is a side view of a cylindrical brush assembled as a unit;

Fig. 2 is a perspective view of one of the backing portions showing theinner side of the same as provided with a tongue;

Fig. 3 is a similar view of the other portion showing a dovetail groovein which the tongue of Fig. 2 is inserted to form the assembly of Fig.1; and

Fig. 4 is an end view of Fig. 1.

The assembled hairbrush with the ends of the bristles forming acylindrical brushing surface as indicated by Fig. 4 is shown by Fig. 1.The backing of the cylindrical brush unit consists of twosemi-cylindrical backing units l and 2 each with tufts 3 of bristlessecured thereto as by any well known means. The tufts 3 are spaced asdesired over the semi-cylindrical outer faces or sides of the backings.At the inner ends of the backings handles 4 are integrally attached.Each backing portion and handle is preferably of molded plastic materialbut may be otherwise formed.

The handles as shown are preferably arcuate- 1y formed from end to end,with the outer ends meeting and in contact with each other. Matingjoined portions are provided at these ends as will be described.

In Fig. 2 it will be seen that the inner side or back of one of thebacking portions is provided with a tapered tongue 5 extendinglongitudinally thereof and outwardly flared toward the outer end of theback 8. The tongue is undercut at each side as indicated at 6 so as tobe received in an undercut dovetail groove 1 of the other backingportion shown by Fig. 3.

The backs 8 and 9 are substantially flat sur-- faces for a slidable faceto face contact particularly along their edges so as to present anattractive appearance when brought together as in Fig. 1 with the tongue5 inserted in the roove 1. The direction of the arrow on backing 2 ofFig. 1 indicates the direction of that member relative to backing I whenfitting the tion once the tongue 5 is fully seated in the groove. Thusthe two handle ends are together and the outer ends of backing l and 2are matched and in registration. However, in order to prevent a looseslidable relation reversely as by an inadvertent oifsetting when in use,the matched handles are formed with the outwardly bowed or archedconformation and are brought together at their outer ends. The upperhandle is formed with a beading or ridge l 0 lying transversely of thehandle. The lower handle is provided with a transverse grooving II inwhich the bead is received when in assembled position. Any suitableinterfitting mated detent surfaces may be formed which will provide areleasable engagement holding the tongue and groove in fully seatedrelation.

The handles are outwardly bowed as stated and the outer ends thereof mayalso be yieldably pressed together so that the mating jointed surfacesact to prevent unintentional relative longitudinal movement. A handlesuitable for grasping in the ordinary manner is thus provided. When theseparable units are to be intentionally parted. the inherentyieldability of the handle material permits the slight bending necessaryto spread the ends apart and slide the backing l forwardly to releasethe detent connection of the handles and the complete separation of theparts.

Having described my invention, I claim:

1. A composite hairbrush having a cylindrical brushing surface andformed by a twin brush construction comprising a pair of separable unitseach having a backing portion and a handle extending from one endthereof and adapted for use as an individual brush with a semi-cylindrical brushing surface, said backing portions having the backs thereof inlongitudinal slidable relation with one of the backs having a flaredlongitudinally disposed dovetail groove, the other back having a flaredtongue providing a sliding engagement in said groove and in assembledposition holding said backing portions back to back, each of saidhandles being arcuately bowed in opposite directions from each otherportion with an inner and outer side and a.

handle extending from adjacent ends of said backing portions, the outer"sides: of said backaing portions being semi-cylindrical in formation andhaving a series of bristles mounted thereon with a semi-cylindricalbrushing surface, the inner side of one of said backing portions beingprovided with a tapered dovetail groove extending a substantial lengththereof and the inner side of the. other backing portion provided with atapered tongue mating with said grooveand slidably engageable therein;the

engagement of said tongue and groove holding in contiguous" back toback'relation' and'providinga composite said" backing portions togethercylindrical brushing surface; said handles'being arcuately formed inopposing relation and meeting at the outer tip'ends thereof, saidopposite tip ends being provided with interfitting detent surfacesreleasably'holding said separable units against relative longitudinalmovement on said tongue and'groove connection.

3. A composite hairbrush having a generally cylindrical brushing surfaceand comprising a pair of separable units, each unit having a handie anda backing portion extending from one end of the handle and adapted foruse as an individual brush with a semi-cylindrical brushing surface,said backing portions having a back to back. longitudinallyslidablo-relation. with a tapered dovetail tongue and groove connectionjoining said backing portions substantially throughout the lengththereof and providing a wedged engagement in assembled position with theouter ends of said backing portions in registrati0n, the saidohandles atthe outer tip end portions thereof being yieldably urged together and:provided with interfltting detent surfaces resiliently holding saidseparable units against relative longitudinal movement.

RALPH T. TEETSEL.

References; Cited in. the. file; of. this.- patent;

UNITED s'm'ms mmmrs" Number Name Date 140,447 Gilder July, 1,1873.

1,077,909. Gruehl' Nov. 4;,1913;

FOREIGN PATENTS- Number Country Date 11,044 Sweden May 1'7, 1899 16,879Great Britain July 20,. 1909 237,077 Great Britain July-23; 1925

